EPPING — A Northwood man has been indicted on charges alleging he broke into the garage at the New Hampshire State Police barracks in Epping and tampered with evidence in a drug case.

Ryan MacKenzie is accused of entering the garage on Dec. 30, 2011, and removing a pack of cigarettes from a car that contained potential drug evidence.

The cigarette pack “appeared to contain a white powdery substance,” according to an indictment. Prosecutors say MacKenzie took the pack to “impair its verity or availability” in the drug investigation.

The car was parked at the state police barracks at 315 Calef Highway at the time, according to court documents. It had been seized for an evidence search.

MacKenzie, 28, of 106 Allen Farm Road, Northwood, was indicted by a Rockingham County grand jury in April on two class B felony charges. One alleges he falsified physical evidence. A second charge accuses him of burglary for entering the garage at a time when the area was not open to the public, and MacKenzie was not “licensed or privileged to enter.”

An official at State Police Troop A could not be reached for comment on the case Friday. A State Police spokeswoman also could not be reached.

An indictment is not an indication of guilt. Rather, it signifies that a jury found sufficient evidence to warrant a trial.